If you have an iPhone 7 Plus, there are a few ways to set up voicemail on your device. The first way is to use the AT&T app. To do this, open the app and sign in with your AT&T account. Then, click on the three lines in the top left corner of the screen and select “Set up voicemail.” Once you’ve set up voicemail, you can use it to send messages to your contacts. To do this, open the app and sign in with your AT&T account. Then, click on the three lines in the top left corner of the screen and select “Send voice message.” When you send a voice message, you’ll need to provide your contact’s name and phone number. You can also include a subject line if you want. After you’ve sent a message, you’ll need to wait for it to be sent before clicking on “Reply.”